I bathe in the water in the valley.
yukata ； a summer kimono
|沿||run parallel to||NO ROOF|
So you bathe under a PEAKED ROOF for privacy.
Outdoors (i.e. where there is NO ROOF), you run parallel to the river.
SWAMP THING uses a crown to change his appearance.
If you melt something it takes on the appearance of WATER.
you TAKE OFF YOUR CROWN to bathe.